Xylem Lab 970 User Manual

Operating manual

S/cm

nLF

Lab 970

ba75558e03 11/2009

DRAFT: November 13, 2009

Laboratory conductivity meter

with automatic sensor recognition

Lab 970

Accuracy when going to

press

Warranty We guarantee the instrument described for 3 years from the date of

The use of advanced technology and the high quality standard of our instruments are the result of continuous development. This may result in differences between this operating manual and your instrument. Also, we cannot guarantee that there are absolutely no errors in this manual. Therefore, we are sure you will understand that we cannot accept any legal claims resulting from the data, figures or descriptions.

purchase. The instrument warranty covers manufacturing faults that are discovered within the warranty period. The warranty does not cover components that are replaced during maintenance work, e. g. batteries.

The warranty claim extends to restoring the instrument to readiness for use but not, however, to any further claim for damages. Improper handling or unauthorized opening of the instrument invalidates any warranty claim.

To ascertain the warranty liability, return the instrument and proof of purchase together with the date of purchase freight paid or prepaid.

CE conformity

Radio data transmission

SI Analytics GmbH hereby declares that the Lab 970 meter is in compliance with the essential requirements and the other relevant provisions of Directive 1999/5/EC. The EC declaration of conformity can be requested from SI Analytics GmbH.

Reprinting - even in the form of excerpts - is only allowed with the explicit written authorization of SI Analytics GmbH. Printed in Germany.

ba75558e03 11/2009

Lab 970

KONFORMITÄTSERKLÄRUNG DECLARATION OF CONFORMITY DÉCLARATION DE CONFORMITÉ

Wir erklären in alleiniger

Verantwortung, dass das

Produkt

Konduktometer

Lab 970

auf das sich diese Erklärung

bezieht, übereinstimmt mit

den Angaben im Kapitel

We declare under our sole

responsibility that the

product

Conductivity meter

Lab 970

to which this declaration

relates is in conformity with

the specifications in the

chapter

Nous déclarons sous notre seule responsabilité que le

produit

Conductimètre

Lab 970

auquel se réfère cette

déclaration est conforme aux

indications du chapitre

30. Oktober, October 30, 30 octobre 2005 AGQSF 0000-A104-01/091030

SI Analytics GmbH

Hattenbergstr. 10

D-55122 Mainz

Deutschland, Germany, Allemagne

Technische Daten

Konduktometer

Lab 970

30. Oktober 2009

ba75558e03 11/2009

Lab 970

ba75558e03 11/2009

Lab 970 Contents

Lab 970 - Contents

1 Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

1.1 Keypad . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

1.2 Display . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

1.3 Socket field . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10

1.4 Automatic sensor recognition . . . . . . . . . . . . . . . . . . . . . 11

2 Safety . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13

2.1 Authorized use . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14

2.2 General safety instructions . . . . . . . . . . . . . . . . . . . . . . . 14

3 Commissioning. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17

3.1 Scope of delivery. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17

3.2 Initial commissioning . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17

4 Operation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19

4.1 Switching on the meter . . . . . . . . . . . . . . . . . . . . . . . . . . 19

4.2 General operating principles . . . . . . . . . . . . . . . . . . . . . . 20

4.2.1 Operating modes . . . . . . . . . . . . . . . . . . . . . . . . 20

4.2.2 Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20

4.3 Measuring . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21

4.3.1 Measuring the conductivity. . . . . . . . . . . . . . . . . 22

4.3.2 Measuring the resistivity. . . . . . . . . . . . . . . . . . . 22

4.3.3 Measuring the salinity . . . . . . . . . . . . . . . . . . . . 23

4.3.4 Measuring the total dissolved solids (TDS) . . . . 24

4.3.5 Measuring with stability control . . . . . . . . . . . . . 25

4.4 Determining/setting up the cell constant [C] . . . . . . . . . . 26

4.4.1 Determining the cell constant (calibration). . . . . 26

4.4.2 Using the last calibrated cell constant . . . . . . . . 29

4.4.3 Setting the cell constant manually . . . . . . . . . . . 30

4.5 Setting the temperature compensation TC . . . . . . . . . . . 34

4.6 Downloading calibration data . . . . . . . . . . . . . . . . . . . . . 38

4.7 Transmitting data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38

4.7.1 Options for data transmission . . . . . . . . . . . . . . 40

4.7.2 Automatically downloading measurement datasets

at intervals . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40

4.7.3 RS232 interface . . . . . . . . . . . . . . . . . . . . . . . . . 40

4.7.4 USB interface (device) . . . . . . . . . . . . . . . . . . . . 41

4.7.5 Operation with MultiLab pilot . . . . . . . . . . . . . . . 41

4.8 Settings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43

4.8.1 System settings . . . . . . . . . . . . . . . . . . . . . . . . . 44

ba75558e03 11/2009

Contents Lab 970

4.8.2 Measurement settings . . . . . . . . . . . . . . . . . . . . 46

4.8.3 Interval for automatic data transmission . . . . . . . 48

4.9 Reset . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 49

4.9.1 Resetting the cell constant . . . . . . . . . . . . . . . . . 49

4.9.2 Resetting meter settings. . . . . . . . . . . . . . . . . . . 50

5 Maintenance, cleaning, disposal . . . . . . . . . . . . . . . . . 53

5.1 Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 53

5.1.1 Replacing the batteries. . . . . . . . . . . . . . . . . . . . 53

5.2 Cleaning. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 54

5.3 Packing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 54

5.4 Disposal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 54

6 What to do if... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 55

7 Technical data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 57

7.1 General data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 57

7.2 Measuring ranges, resolution, accuracy . . . . . . . . . . . . . 59

8 Lists . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 61

ba75558e03 11/2009

Lab 970 Overview

nLF

1Overview

The Lab 970 compact precision conductivity meter enables you to perform conductivity measurements quickly and reliably. The Lab 970 provides the maximum degree of operating comfort, reliability and measuring certainty for all applications. The proven procedures for determining or adjusting the cell constant support your work with the conductivity meter.

1 Keypad

2 Display

3 Socket field

Note

The meter is also available as part of an individual Set of equipment. You will find information on this and other accessories in the SI Analytics GmbH laboratory catalog or via the Internet.

ba75558e03 11/2009

Overview Lab 970

MODE SC

CAL

MODE

CAL

1.1 Keypad

In this operating manual, keys are indicated by brackets <..> . The key symbol (e.g. <OK>) generally indicates a short keystroke (under 2 sec) in this operating manual. A long keystroke (approx. 2 sec) is indicated by the underscore behind the key symbol (e.g.

<OK

_>).

<On/Off>: <On/Off

<MODE>: <MODE

<CAL>: <CAL

<SC>: <SC

<▲>: Increment values, scroll

_>:

Switch the meter on/off Resetting the determined cell constant

Select measured parameter Open setting menu for calibration and measurement

Call up calibration procedure Call up calibration data

Activate / deactivate stability control Set the interval for data transmission

<▼>: Decrement values, scroll

<OK>:

_>:

<OK

Confirm entries Open setting menu for system settings

ba75558e03 11/2009

Lab 970 Overview

Time

Day.Month

Year

Baud

No.

Ident

1/cm

°F

TDS

Sal

S/cm

mg/l

MW*cm

LoBat

Tref25

Tref20

Auto

Store

ARng

Cal

RCL

nLF

Lin

Measured variable

ID sensor symbol

Measured value display

Temperature display, function display indicators, status display indicators

1.2 Display

Temperature display,

function display

indicators, status

display indicators

[AR] Stability control is active

[ARng] Automatic range switch-over: meter measures with

highest possible resolution

[Cal] Calibration

[Lin] Linear temperature compensation

[LoBat] With battery operation: Batteries almost empty

[nLF] Nonlinear temperature compensation

[TP] Temperature measurement active

[Tref20] Reference temperature 20 °C

[Tref25] Reference temperature of 25 °C

ba75558e03 11/2009

Overview Lab 970

1.3 Socket field

Connectors:

1 Conductivity measuring cell

2 Temperature sensor

4 USB interface

5 Power pack

6 RS 232 interface

CAUTION

Only connect sensors to the meter that cannot return any voltages or currents that are not allowed (> SELV and > current circuit with current limiting). Almost all measuring cells - in particular SI Analytics GmbH measuring cells - fulfill these conditions.

ba75558e03 11/2009

Lab 970 Overview

1.4 Automatic sensor recognition

The automatic sensor recognition function enables

z operation of a sensor with different meters without recalibration

z operation of different sensors with a meter without recalibration

z to assign measurement data to a sensor

– measurement datasets are always downloaded to the interface

along with the sensor type and sensor series number

z to assign calibration data to a sensor

– calibration data is always downloaded to the interface along with

the sensor type and sensor series number

z automatic activation of cell constants with conductivity sensors

To be able to use the automatic sensor recognition function, you need a meter that supports the automatic sensor recognition (e.g. Lab 970) and a sensor (ID sensor) that is suitable for sensor recognition.

In ID sensors, sensor data is stored that clearly identifies the sensor. The sensor data is automatically transmitted to the meter by radio and used for sensor identification there.

Note

You can also operate non-ID sensors with the Lab 970 meter. In this case, however, you will not be able to use the advantages of the sensor recognition function.

ba75558e03 11/2009

Overview Lab 970

ID sensor symbol

°F

S/cm

Tref20

Auto

Store

MW*cm

Time

Day.Month

Year

Baud

No.

Ident

ARng

Cal

RCL

Lin

LoBat

1/cm

mg/l

Tref25

nLF

ID sensors SI Analytics GmbH ID sensors support the automatic sensor

recognition. "ID" is added to the designation of these sensors, e.g. electrode LF913T ID.

Note

Information on available ID sensors is given on the Internet or directly by SI Analytics.

ID sensors connected to the Lab 970 meter are identified by the ID sensor symbol on the display of the meter.

Sensor data from

ID sensors

ID sensors transmit the following sensor data

z Sensor type

z Sensor series number

z Calibration data

– Calibration date

– Calibration characteristics

– Calibration interval

The calibration data is updated in the ID sensor after each calibration procedure. The ID sensor symbol flashes while this is being done.

Note

The sensor must not be disconnected while the ID sensor symbol is flashing, as otherwise the calibration data will not be completely transmitted. The sensor will then have no valid calibration.

Note

If non-ID sensors are used, the calibration data is read out by the meter and stored in the meter.

ba75558e03 11/2009

Lab 970 Safety

2 Safety

This operating manual contains basic instructions that you must follow during the commissioning, operation and maintenance of the meter. Consequently, all responsible personnel must read this operating manual before working with the meter. The operating manual must always be available within the vicinity of the instrument.

Target group The meter was developed for work in the laboratory.

Thus, we assume that, as a result of their professional training and experience, the operators will know the necessary safety precautions to take when handling chemicals.

Safety instructions Safety instructions in this operating manual are indicated by the

warning symbol (triangle) in the left column. The signal word (e.g. "Caution") indicates the level of danger:

Further notes

WARNING

indicates instructions that must be followed precisely in order to avoid possibly great dangers to personnel.

CAUTION

indicates instructions that must be followed precisely in order to avoid the possibility of slight injuries or damage to the instrument or the environment.

Note

indicates notes that draw your attention to special features.

Note

indicates cross-references to other documents, e.g. operating manuals.

ba75558e03 11/2009

Safety Lab 970

2.1 Authorized use

Authorized use of the meter consists exclusively of the measurement of conductivity, temperature, salinity and TDS (total dissolved solids) in a laboratory. The technical specifications as given in chapter 7 T

ECHNICAL DATA

(page 57) must be observed. Only the operation and running of the meter according to the instructions given in this operating manual is authorized. Any other use is considered unauthorized.

2.2 General safety instructions

This instrument is constructed and tested in compliance with the IEC 1010 safety regulations for electronic measuring instruments. It left the factory in a safe and secure technical condition.

Function and

operational safety

The smooth functioning and operational safety of the meter can only be guaranteed if the generally applicable safety measures and the specific safety instructions in this operating manual are followed during operation.

The smooth functioning and operational safety of the meter can only be guaranteed under the environmental conditions that are specified in chapter 7 T

ECHNICAL DATA (page 57).

If the instrument was transported from a cold environment to a warm environment, the formation of condensate can lead to the faulty functioning of the instrument. In this event, wait until the temperature of the instrument reaches room temperature before putting the instrument back into operation.

CAUTION

The meter is only allowed to be opened by personnel authorized by SI Analytics GmbH.

ba75558e03 11/2009

Lab 970 Safety

Safe operation If safe operation is no longer possible, the instrument must be taken out

of service and secured against inadvertent operation! Safe operation is no longer possible if the meter:

z has been damaged in transport

z has been stored under adverse conditions for a lengthy period of

time

z is visibly damaged

z no longer operates as described in this manual.

If you are in any doubt, please contact the supplier of the meter.

Obligations of the

purchaser

The purchaser of this meter must ensure that the following laws and guidelines are observed when using dangerous substances:

z EEC directives for protective labor legislation

z National protective labor legislation

z Safety regulations

z Safety datasheets of the chemical manufacturers.

ba75558e03 11/2009

Safety Lab 970

ba75558e03 11/2009

Lab 970 Commissioning

3 Commissioning

3.1 Scope of delivery

z Lab 970 laboratory meter

z Power pack

z 4 batteries 1.5 V Mignon type AA

z Z875 USB cable with A plug on B plug

z Transparent cover

z Operating manual

z CD-ROM with USB driver

3.2 Initial commissioning

Insert batteries

Perform the following activities:

z Insert batteries

z Switch on the meter

z Set the date and time

z Connect the power pack (for line power operation only).

1 Open the battery compartment (1) on the underside of the

meter.

2 Place four batteries (type Mignon AA) in the battery

compartment.

3 Close the battery compartment (1).

The date (day) flashes in the display.

4 Set the date and time according to page 42.

ba75558e03 11/2009

Commissioning Lab 970

CAUTION

Make sure that the poles of the batteries are the right way round. The

± signs on the batteries must correspond to the ± signs in the

battery compartment. Only use leakproof alkaline manganese batteries.

Switching on the meter

Setting the date and

time

Connecting the power

pack

1 Switch on the meter with <On/Off>.

A display test is briefly displayed.

2 See page 44

You can either operate the measuring instrument with batteries or with the plug-in power supply. The plug-in power supply supplies the measuring instrument with low voltage (12 VDC). This saves the batteries.

CAUTION

The line voltage at the operating site must lie within the input voltage range of the original power pack (see page 57).

CAUTION

Use original power packs only (see page 57).

3 Insert the plug into the socket of the conductivity meter.

4 Connect the original power pack to an easily accessible power

outlet.

Note

You can carry out measurements without the power pack.

ba75558e03 11/2009

Lab 970 Operation

4 Operation

4.1 Switching on the meter

1 Place the meter on a flat surface and protect it from intense

light and heat.

2 Press the <On/Off>

A display test is briefly displayed. Subsequently, the meter switches to the measuring mode (measured value display).

Note

The meter has an energy saving feature to avoid unnecessary battery depletion during battery operation. The energy saving feature switches off the meter if no key was pressed during the specified interval (setting the switch-off interval see page 44). The energy saving feature is not active:

z if the meter is supplied via the power pack or the USB interface

z automatic storingif the printer cable is connected (for external

printers).

key.

ba75558e03 11/2009

Operation Lab 970

4.2 General operating principles

This section contains basic information of the operation of the Lab 970.

4.2.1 Operating modes

The instrument has the following operating modes:

z Measuring

The display indicates the measurement data in the measured value display

z Calibration

The display guides you thru a calibration procedure with calibration information

z Transmitting data

The meter transmits measuring data and calibration records to a serial interface automatically or manually.

z Configuration

The system menu or a sensor menu with submenus, settings and functions is displayed

4.2.2 Operation

Keys The meter is operated via keys. The keys can have different functions

with long or short keystrokes.

Functions Generally, with a short keystroke a function is carried out. A long

keystroke opens a setting menu.

In a setting menu, settings are selected with the <▲><▼> keys. A setting is confirmed with <OK>. With confirming, the setting is finished and the next setting is displayed.

Representation In this operating manual, keys are indicated by brackets <..> .

The key symbol (e.g. <OK>) generally indicates a short keystroke (under 2 sec) in this operating manual. A long keystroke (approx. 2 sec) is indicated by the underscore behind the key symbol (e.g.

<OK

_>).

ba75558e03 11/2009

Lab 970 Operation

4.3 Measuring

Preparatory activities Perform the following preparatory activities when you want to measure:

1 Connect a measuring cell to the meter.

2 Adjust the temperature of the test solutions and measure the

current temperature if the measurement is made without a temperature sensor.

3 Calibrate or check the meter with the measuring cell.

4 Select the measured parameter with <MODE>.

CAUTION

When connecting an earthed PC/printer, measurements cannot be performed in earthed media as incorrect values would result. The RS232 and USB interfaces are not galvanically isolated.

Temperature sensor The temperature measurement is absolutely essential for a

reproducible conductivity measurement. If a temperature sensor is connected, it is indicated on the display by TP.

If you use a conductivity measuring cell without integrated temperature sensor, we recommend to use an external temperature sensor.

Note

The conductivity meter automatically recognizes the type of the temperature sensor used. Therefore, you can connect measuring cells with an NTC30 or Pt1000.

ba75558e03 11/2009

Operation Lab 970

S/cm

nLF

Tref25

4.3.1 Measuring the conductivity

1 Perform the preparatory activities according to page 21.

2 Immerse the conductivity measuring cell in the test sample.

3 If necessary, scroll with <MODE> until the measured

parameter

4 Wait for a stable measured value.

ӕ with the unit mS/cm or µS/cm is displayed.

5 Measurement with stability control (see page 25).

4.3.2 Measuring the resistivity

1 Perform the preparatory activities according to page 21.

2 Immerse the conductivity measuring cell in the test sample.

3 If necessary, scroll with <MODE> until the measured

parameter

4 Wait for a stable measured value.

ӕ with the unit MOhm is displayed.

ba75558e03 11/2009

+ 49 hidden pages